body{
    margin:0;
    padding:0;
}
:root{
    font-size: 10px;
}
.container{
    display: flex;
    justify-content: space-around;
    height: 100vh;
    align-items: center;

}
.key{
    /* max-width:10%; */
    border: 4px solid black;
    border-radius: 5px;
    margin: 1rem;
    font-size: 1.5rem;
    padding: 1rem .5rem;
    transition: all .07s;
    width: 100px;
    text-align: center;
    color: white;
    background: rgba(0,0,0,0.4);
    text-shadow: 0 0 5px black;
}
.key h2{
    margin:0;
    font-size: 40px
}
.key p{
    margin:0;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #ffc600;
}
.playing {
    transform:scale(1.1);
    border-color:#ffc600;
    box-shadow: 0 0 10px #ffc600;
}